メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.55149547952 34.0655305529288, 134.550143842481 34.0657527865908, 134.550119427015 34.0653244763259, 134.551340494161 34.0650975172902, 134.55149547952 34.0655305529288)) ^^http://www.opengis.net/ont/geosparql#wktLiteral